Meta

Access to other SNs too.

• www.utterli.com  - phone updates, unconfirmed supports delayed sends.  Blogger, LiveJournal, Tumblr, TypePad, Twitter, WordPress, MovableType, Flickr, YahooGroups, Twitxr, Drupal, LiveSpaces, YouTube, MetaWeblog API, Pownce, blip.tv

• www.Power.com - Orkut, MySpace, Hi5, LinkedIn, Twitter .
• trigga.me -   Includes Twitter, LinkedIn, Facebook

Clients

It doesn't take long for most Twitter users to move beyond using Twitter.com to post and monitor their posts or “tweets.”  There are much more powerful tools at your disposal for reading, filtering, searching and posting to Twitter.com

• PeopleBrowsr

• Twitterific - Mac
• Adobe Air-based clients such as Twhirl, Tweetr and Spaz
• Firefox add-ons like Twitterfox and TwitBin;
•  and software that lets you track multiple social engines—such as Facebook, FriendFeed and even instant messaging as well as Twitter—like Digsby and AlertThingy.
• TweetDeck, which features a huge but customizable user interface that makes it easier to track posts, replies and direct messages as well as set up customized searches
• TweetLater and FutureTweets, which let you schedule posts and autoreplies, making your tweeting life easier.

Search

Tracking Twitter conversations can quickly become overwhelming, which necessitates a search tool. Twitter got its first search tool in the form of third-party service Summize. The application proved so useful and popular, Twitter acquired Summize last summer and now runs it at search.twitter.com.

• Twitturly is a service for tracking what URLs people are sharing and talking about.
• TweetMeme tracks hot topics.
• Twithority and Twitority (yes, they both exist) return search results based on an authority-rating of the person writing the post.
• Tweetbeeps, meanwhile, adds alerting to search, allowing users to set up search terms and be alerted hourly—via Twitter of course—when the term is used.

• Search and directory tools help users finder other Twitterers, including Twellow, which organizes users by industry category, and Mr. Tweet, which recommends people to follow. On the other side of the coin, Qwitter and Twitterless let you know who's stopped following your tweets.
• Tweetag
• Searchtastic. Search historical tweets, top 100.

Visual analysis

Graphical tools for analyzing Twitter conversations, including some designed specifically for marketing professionals, are starting to proliferate.

• Twist lets you visually compare topic trends.
• TweetStats reports on how you and your followers are tweeting.
• TweetVolume graphically compares how often certain phrases are tweeted.
• TweetPro is a paid service for finding out who is talking about your products and services.

Other

Contests

• http://www.wildfireapp.com - Wildfire is a nifty service that automates one of the top Twitter promotional uses - running a contest.  But it's not free.  Even the most basic use costs $5 + $1/day.

Backup

• http://tweetake.com/
• http://tweetbackup.com/

Hashtags (#)

• From Twitter Fan wiki: An overview + the following resources - hashtags.org provides real-time tracking of Twitter hashtags. Opt-in by following @hashtags to have your hashtags tracked.  Similarly, Twemes offers real-time tracking without the necessity of following a specific Twitter account.  Also, with their purchase of Summize, Twitter itself now offers some support of hashtags at their search engine: http://search.twitter.com. Other services such as TweetChat, TweetGrid, and Twitterfall are also popular for following hashtags in real-time.
• http://twubs.com. Search and build communities around tags

Twitter page customization

• Custom Twitter Backgrounds: Tips for Better Readability
• http://mytweetspace.com - Free and custom backgrounds